/**
* Copyright (c) 2010, Attila Magyar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*     * Redistributions of source code must retain the above copyright
*       notice, this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright
*       notice, this list of conditions and the following disclaimer in the
*       documentation and/or other materials provided with the distribution.
*     * Neither the name of the Attila Magyar nor the
*       names of its contributors may be used to endorse or promote products
*       derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

package org.uftp.buffers;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import org.uftp.buffers.impl.CircularBuffer;
import org.uftp.log.FTPLogManager;
import org.uftp.log.FTPLogger;

/**
 * J2ME version
 * @author Zeroflag
 */
public class BufferFactory {
    
    private static FTPLogger logger = FTPLogManager.getDefaultLogger( BufferFactory.class.getName() );
    
    public static int DEFAULT_BUFFER_SIZE = 256;
    
    private static Class defaultReadBuffer;
    
    static {
        setDeafaultReadBuffer( CircularBuffer.class );
    }
    
    public static ReadBuffer createDefaultReadBuffer( InputStream stream ) {
        return createDefaultReadBuffer( stream, DEFAULT_BUFFER_SIZE );
    }
    
    public static ReadBuffer createDefaultReadBuffer( InputStream stream, int bufferSize ) {
        
        try {            
            logger.debug( "Creating buffer impl: " + defaultReadBuffer.getName() );
            ReadBuffer rb = (ReadBuffer) defaultReadBuffer.newInstance();
            rb.init( bufferSize );
            rb.setStream( stream );
            return rb;        
        } catch (InstantiationException ex) {
            logger.exception( ex, "BufferFactory error" );
            
        } catch (IllegalAccessException ex) {
            logger.exception( ex, "BufferFactory error" );            
        }                        
        
        return null;
    }
    
    public static void setDeafaultReadBuffer( Class readBufferClazz ) {
        defaultReadBuffer = readBufferClazz;
    }

    public static InputStream newInputStream( InputStream is ) {
        return new DataInputStream( is );
    }

    public static OutputStream newOutputStream( OutputStream os ) {
        return new DataOutputStream( os );
    }
    
    public static Writer newStreamWriter( OutputStream os ) {
        return new OutputStreamWriter( os );
    }
}
